Flue insulation and air tightness requirements - Revision history

Editor at 18:07, 21 January 2021

2021-01-21T18:07:29Z

← Older revision		Revision as of 18:07, 21 January 2021
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	In the case of flues and chimneys, heat that would otherwise be lost through the building structure is now retained. Under these changing conditions, insulated flues must demonstrate that their own insulation is sufficient. This will ensure there are not dangerous levels of local overheating that could damage the building structure or lead to fires.		In the case of flues and chimneys, heat that would otherwise be lost through the building structure is now retained. Under these changing conditions, insulated flues must demonstrate that their own insulation is sufficient. This will ensure there are not dangerous levels of local overheating that could damage the building structure or lead to fires.

−	EN 1443:2019 lays out a series of standard structure types which cover the European ~~market~~, with varying levels of insulation applied to walls and ceiling in conjunction with the floor penetration and enclosure variations. The standard also specifies the U and R values required for the test structures based on national building regulations. Manufacturers can then select and test in accordance with classes relevant to their markets and local methods of construction and regulation.	+	BS EN 1443:2019 lays out a series of standard structure types which cover the British and European markets, with varying levels of insulation applied to walls and ceiling in conjunction with the floor penetration and enclosure variations. The standard also specifies the U and R values required for the test structures based on national building regulations. Manufacturers can then select and test in accordance with classes relevant to their markets and local methods of construction and regulation.

	Most existing housing stock in the UK will be best represented by structure type “b”, with U value represented by a 100 mm wall and floor thickness. For new build, the U value is represented by a 200 mm wall and roof thickness, close to type “c”. For passive house, the U value is represented by test structure “e” which increases the wall and roof thickness to 400mm.		Most existing housing stock in the UK will be best represented by structure type “b”, with U value represented by a 100 mm wall and floor thickness. For new build, the U value is represented by a 200 mm wall and roof thickness, close to type “c”. For passive house, the U value is represented by test structure “e” which increases the wall and roof thickness to 400mm.
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	= Product standards in development =		= Product standards in development =

−	While EN 1443:2019 has been published, the related harmonised product standards for different chimney types are still being finalised. This means that testing with the new structure types is not yet a requirement for CE marking (or the UKCA mark). However, some manufacturers are already looking to carry out testing on their existing products to the enhanced requirements and listing the data on a voluntary basis.	+	While BS EN 1443:2019 has been published, the related harmonised product standards for different chimney types are still being finalised. This means that testing with the new structure types is not yet a requirement for CE marking (or the UKCA mark). However, some manufacturers are already looking to carry out testing on their existing products to the enhanced requirements and listing the data on a voluntary basis.

	BSRIA has a purpose-built facility which has recently been upgraded for comprehensive testing of chimneys. The organisation can also carry out development testing on a range of product types:		BSRIA has a purpose-built facility which has recently been upgraded for comprehensive testing of chimneys. The organisation can also carry out development testing on a range of product types:
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	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

		+	* BS EN 1443:2019.
	* BSRIA articles on Designing Buildings Wiki.		* BSRIA articles on Designing Buildings Wiki.
	* CE marking in the construction industry.		* CE marking in the construction industry.

Editor at 19:16, 15 January 2021

2021-01-15T19:16:25Z

← Older revision		Revision as of 19:16, 15 January 2021
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	* Insulation.		* Insulation.
	* Passivhaus.		* Passivhaus.
		+	* Types of chimneys.
	* U-values.		* U-values.

	[[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Products_/_components]]		[[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Products_/_components]]

Editor at 09:31, 15 January 2021

2021-01-15T09:31:25Z

← Older revision		Revision as of 09:31, 15 January 2021
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	While EN 1443:2019 has been published, the related harmonised product standards for different chimney types are still being finalised. This means that testing with the new structure types is not yet a requirement for CE marking (or the UKCA mark). However, some manufacturers are already looking to carry out testing on their existing products to the enhanced requirements and listing the data on a voluntary basis.		While EN 1443:2019 has been published, the related harmonised product standards for different chimney types are still being finalised. This means that testing with the new structure types is not yet a requirement for CE marking (or the UKCA mark). However, some manufacturers are already looking to carry out testing on their existing products to the enhanced requirements and listing the data on a voluntary basis.

−	~~As an ISO 9001 accredited laboratory,~~ BSRIA has ~~expertise and~~ a purpose-built facility which has recently been upgraded for comprehensive testing of chimneys. The organisation can also carry out development testing on a range of product types:	+	BSRIA has a purpose-built facility which has recently been upgraded for comprehensive testing of chimneys. The organisation can also carry out development testing on a range of product types:

	* Metal system chimneys		* Metal system chimneys

Editor at 12:51, 13 January 2021

2021-01-13T12:51:29Z

← Older revision		Revision as of 12:51, 13 January 2021
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	* CE marking in the construction industry.		* CE marking in the construction industry.
	* Chimney definition.		* Chimney definition.
		+	* CLC publishes Conformity Marking of Construction Guide.
	* Flue definition.		* Flue definition.
	* Insulation.		* Insulation.

Editor at 12:41, 13 January 2021

2021-01-13T12:41:52Z

← Older revision		Revision as of 12:41, 13 January 2021
Line 9:		Line 9:
	In the case of flues and chimneys, heat that would otherwise be lost through the building structure is now retained. Under these changing conditions, insulated flues must demonstrate that their own insulation is sufficient. This will ensure there are not dangerous levels of local overheating that could damage the building structure or lead to fires.		In the case of flues and chimneys, heat that would otherwise be lost through the building structure is now retained. Under these changing conditions, insulated flues must demonstrate that their own insulation is sufficient. This will ensure there are not dangerous levels of local overheating that could damage the building structure or lead to fires.

−	EN 1443:2019 lays out a series of standard structure types which cover the European market, with varying levels of insulation applied to walls and ceiling in conjunction with the floor penetration and enclosure variations. The standard also specifies the U ~~&~~ R values required for the test structures based on national building regulations. Manufacturers can then select and test in accordance with classes relevant to their markets and local methods of construction and regulation.	+	EN 1443:2019 lays out a series of standard structure types which cover the European market, with varying levels of insulation applied to walls and ceiling in conjunction with the floor penetration and enclosure variations. The standard also specifies the U and R values required for the test structures based on national building regulations. Manufacturers can then select and test in accordance with classes relevant to their markets and local methods of construction and regulation.

	Most existing housing stock in the UK will be best represented by structure type “b”, with U value represented by a 100 mm wall and floor thickness. For new build, the U value is represented by a 200 mm wall and roof thickness, close to type “c”. For passive house, the U value is represented by test structure “e” which increases the wall and roof thickness to 400mm.		Most existing housing stock in the UK will be best represented by structure type “b”, with U value represented by a 100 mm wall and floor thickness. For new build, the U value is represented by a 200 mm wall and roof thickness, close to type “c”. For passive house, the U value is represented by test structure “e” which increases the wall and roof thickness to 400mm.
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	ENxxxxx – T400 – N1 – D – 3 – G – 50 – c		ENxxxxx – T400 – N1 – D – 3 – G – 50 – c

−	The product designation includes temperature class, pressure class, corrosion resistance class and sootfire resistance class with distance to combustible material where appropriate, and the type of test structure.	+	The product designation includes temperature class, pressure class, corrosion resistance class and sootfire resistance class with distance to combustible material (where appropriate) and the type of test structure.

	= Product standards in development =		= Product standards in development =
Line 40:		Line 40:

	* BSRIA articles on Designing Buildings Wiki.		* BSRIA articles on Designing Buildings Wiki.
		+	* CE marking in the construction industry.
		+	* Chimney definition.
		+	* Flue definition.
		+	* Insulation.
		+	* Passivhaus.
		+	* U-values.
		+
		+	[[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Products_/_components]]

Editor at 11:59, 13 January 2021

2021-01-13T11:59:07Z

← Older revision		Revision as of 11:59, 13 January 2021
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−	[[File:BlueFlue.jpg]]	+	[[File:BlueFlue.jpg\|link=File:BlueFlue.jpg]]

−	~~Legislation and market demand for low carbon solutions are driving the adoption of higher levels of insulation in new build properties and an increasing number of passive house projects.~~	+	= Introduction =

−	These upgrades also mean that related services must change to accommodate these increases. In the case of flues and chimneys, heat that would otherwise be lost through the building structure is now retained. Insulated flues must now demonstrate that their own insulation is sufficient, to ensure there are not dangerous levels of local overheating, that could damage the building structure, or lead to fires.	+	Legislation and market demand for low carbon solutions are driving the adoption of higher levels of insulation in new build properties and an increasing number of passive house projects.These upgrades also mean that related services must change to accommodate these increases.

−	The ~~recently released EN 1443:2019 lays out a series of standard structure types which cover the European market, with varying levels~~ of insulation ~~applied to walls and ceiling~~ in conjunction with the floor penetration and enclosure variations. The standard also specifies the U & R values required for the test structures based on National building regulations. Manufacturers can then select and test in accordance with classes relevant to their markets and local methods of construction and regulation.	+	= The impact of increased insulation in new housing projects =

−	~~Most existing housing stock in~~ the ~~UK will~~ be ~~best represented by~~ structure ~~type “b”, with U value represented by a 100 mm wall and floor thickness~~. ~~For new build~~, ~~the U value~~ is ~~represented by a 200 mm wall and roof thickness, close to type “c”~~. ~~For passive house,~~ the ~~U value is represented by test~~ structure ~~“e” which increases the wall and roof thickness~~ to ~~400mm~~.	+	In the case of flues and chimneys, heat that would otherwise be lost through the building structure is now retained. Under these changing conditions, insulated flues must demonstrate that their own insulation is sufficient. This will ensure there are not dangerous levels of local overheating that could damage the building structure or lead to fires.

−	~~An additional designation letter will be added to the product designation for the type~~ of ~~test~~ structure ~~used during~~ the ~~testing~~, ~~as shown~~ in the ~~example below~~. The ~~product designation includes, temperature class, pressure class, corrosion resistance class~~ and ~~sootfire resistance class~~ with ~~distance~~ to ~~combustible material where appropriate,~~ and ~~the type~~ of ~~test structure:~~	+	EN 1443:2019 lays out a series of standard structure types which cover the European market, with varying levels of insulation applied to walls and ceiling in conjunction with the floor penetration and enclosure variations. The standard also specifies the U & R values required for the test structures based on national building regulations. Manufacturers can then select and test in accordance with classes relevant to their markets and local methods of construction and regulation.

−	~~i.e. ENxxxxx – T400 – N1 – D – 3 – G – 50 – c~~	+	Most existing housing stock in the UK will be best represented by structure type “b”, with U value represented by a 100 mm wall and floor thickness. For new build, the U value is represented by a 200 mm wall and roof thickness, close to type “c”. For passive house, the U value is represented by test structure “e” which increases the wall and roof thickness to 400mm.
−		+
−	~~While EN 1443:2019 is now published,~~ the ~~related harmonised product standards for different chimney types are still being finalised. This means that testing~~ with ~~the~~ new ~~structure types~~ is ~~not yet~~ a ~~requirement for CE marking (or the UKCA mark).~~	+
−		+
−	~~However~~, ~~some manufacturers are already looking to carry out testing on their existing products~~ to the ~~enhanced requirements and listing~~ the ~~data on a voluntary basis~~.	+

−	~~As an ISO 9001 accredited laboratory, BSRIA has expertise and a purpose-built facility which has recently been upgraded~~ for ~~comprehensive testing~~ of ~~chimneys. We can also carry out development~~ testing ~~for our clients~~, ~~on a range of product types~~	+	An additional designation letter will be added to the product designation for the type of test structure used during the testing, as shown in the example here:<br />
		+	ENxxxxx – T400 – N1 – D – 3 – G – 50 – c

−	~~Metal system chimneys~~	+	The product designation includes temperature class, pressure class, corrosion resistance class and sootfire resistance class with distance to combustible material where appropriate, and the type of test structure.

−	~~Metal flue liners~~	+	= Product standards in development =

−	~~Clay/Ceramic liners~~	+	While EN 1443:2019 has been published, the related harmonised product standards for different chimney types are still being finalised. This means that testing with the new structure types is not yet a requirement for CE marking (or the UKCA mark). However, some manufacturers are already looking to carry out testing on their existing products to the enhanced requirements and listing the data on a voluntary basis.

−	~~Concrete flue liner/blocks~~	+	As an ISO 9001 accredited laboratory, BSRIA has expertise and a purpose-built facility which has recently been upgraded for comprehensive testing of chimneys. The organisation can also carry out development testing on a range of product types:

−	Plastic flue liners	+	* Metal system chimneys
		+	* Metal flue liners
		+	* Clay/Ceramic liners
		+	* Concrete flue liner/blocks
		+	* Plastic flue liners

−	BSRIA has now added to its existing chimney testing capability, to ensure that the new testing requirements can be met in a timely fashion~~, allowing~~ manufacturers to be ready for the anticipated changes.	+	BSRIA has now added to its existing chimney testing capability to ensure that the new testing requirements can be met in a timely fashion. The goal is to allow manufacturers to be ready for the anticipated changes.

	-----		-----

Editor: Created page with "File:BlueFlue.jpg Legislation and market demand for low carbon solutions are driving the adoption of higher levels of insulation in new build properties and an increasing nu..."

2021-01-13T11:35:44Z

Created page with "File:BlueFlue.jpg Legislation and market demand for low carbon solutions are driving the adoption of higher levels of insulation in new build properties and an increasing nu..."

New page

[[File:BlueFlue.jpg]]

Legislation and market demand for low carbon solutions are driving the adoption of higher levels of insulation in new build properties and an increasing number of passive house projects.

These upgrades also mean that related services must change to accommodate these increases. In the case of flues and chimneys, heat that would otherwise be lost through the building structure is now retained. Insulated flues must now demonstrate that their own insulation is sufficient, to ensure there are not dangerous levels of local overheating, that could damage the building structure, or lead to fires.

The recently released EN 1443:2019 lays out a series of standard structure types which cover the European market, with varying levels of insulation applied to walls and ceiling in conjunction with the floor penetration and enclosure variations. The standard also specifies the U & R values required for the test structures based on National building regulations. Manufacturers can then select and test in accordance with classes relevant to their markets and local methods of construction and regulation.

Most existing housing stock in the UK will be best represented by structure type “b”, with U value represented by a 100 mm wall and floor thickness. For new build, the U value is represented by a 200 mm wall and roof thickness, close to type “c”. For passive house, the U value is represented by test structure “e” which increases the wall and roof thickness to 400mm.

An additional designation letter will be added to the product designation for the type of test structure used during the testing, as shown in the example below. The product designation includes, temperature class, pressure class, corrosion resistance class and sootfire resistance class with distance to combustible material where appropriate, and the type of test structure:

i.e. ENxxxxx – T400 – N1 – D – 3 – G – 50 – c

While EN 1443:2019 is now published, the related harmonised product standards for different chimney types are still being finalised. This means that testing with the new structure types is not yet a requirement for CE marking (or the UKCA mark).

However, some manufacturers are already looking to carry out testing on their existing products to the enhanced requirements and listing the data on a voluntary basis.

As an ISO 9001 accredited laboratory, BSRIA has expertise and a purpose-built facility which has recently been upgraded for comprehensive testing of chimneys. We can also carry out development testing for our clients, on a range of product types

Metal system chimneys

Metal flue liners

Clay/Ceramic liners

Concrete flue liner/blocks

Plastic flue liners

BSRIA has now added to its existing chimney testing capability, to ensure that the new testing requirements can be met in a timely fashion, allowing manufacturers to be ready for the anticipated changes.

-----
This article originally appeared on the BSRIA website under the headline, [https://www.bsria.com/uk/news/article/insulation_of_flues_and_chimneys_needs_to_match_the_increasing_air_tightness_of_buildings/ 'Insulation of flues and chimneys needs to match the increasing air tightness of buildings]'. It was published in January 2021.

--[[User:BSRIA|BSRIA]]

= Related articles on Designing Buildings Wiki =

* BSRIA articles on Designing Buildings Wiki.